2163857660 has 48 divisors (see below), whose sum is σ = 4695909120. Its totient is φ = 836689920.

The previous prime is 2163857651. The next prime is 2163857669. The reversal of 2163857660 is 667583612.

It is an interprime number because it is at equal distance from previous prime (2163857651) and next prime (2163857669).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163857669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 872342 + ... + 874818.

It is an arithmetic number, because the mean of its divisors is an integer number (97831440).

Almost surely, 2^2163857660 is an apocalyptic number.

2163857660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2163857660 is an abundant number, since it is smaller than the sum of its proper divisors (2532051460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2163857660 is a wasteful number, since it uses less digits than its factorization.

2163857660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3926 (or 3924 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 2163857660 is about 46517.2834546473. The cubic root of 2163857660 is about 1293.4299004726.

The spelling of 2163857660 in words is "two billion, one hundred sixty-three million, eight hundred fifty-seven thousand, six hundred sixty".